var player = "<embed src=1.mp3 loop=-1>";
	var items = ['1', '2', '3', '4', '5'];
	var r = 1;
	var jx = '特等奖';
	var cf = '是';
	function display() {
	    document.getElementById("form1").style.display = "flex";
	}
	function setinfo() {
	    r1 = document.form1.elements[0].value * 1;
	    if (r1 != 0) {
	        r = r1;
	    };
	    jx1 = document.form1.elements[1].value;
	    if (jx1 != 0) {
	        jx = jx1;
	    };
	    items1 = document.form1.elements[2].value.split(" ");
	    if (items1 != 0) {
	        items = items1;
	    };
		cf1 = document.form1.elements[3].value;
		if (cf1=='是'||cf1=='否'){
		    cf = cf1;
		};
	    document.getElementById("form1").style.display = "none";
	}
	function Random() {
	    var i=items.length,
	    temp, num;
	    var n = '';
	    for (var j=1; j<r+1;j++){
	        num = Math.floor(Math.random()*(i-j+1));
	        temp = items[num];
	        items[num] = items[i-j];
	        items[i-j] = temp;
	        n += "<p class='span' id='" + j + "'>" + items[i-j] + "</p>";	
	    };
	    document.getElementById("random").innerHTML = n;
	}
	function choujiang() {
	    var i = items.length;
	    if (i < r) {
	        alert("抽奖人数不足");
	    } 
		else if (document.getElementById("btn1").innerHTML == "开始抽奖") {
	        document.getElementById("btn1").innerHTML = "停止抽奖";
	        document.getElementById("player").innerHTML = player;
	        fun = setInterval('Random()', 100);
	    } 
		else if (document.getElementById("btn1").innerHTML == "停止抽奖") {
	        clearInterval(fun);
	        document.getElementById("player").innerHTML = '';
	        document.getElementById("btn1").innerHTML = "开始抽奖";
	        var n2 = '';
	        for (var j=1; j<r+1; j++) {
	            document.getElementById('luckmen').innerHTML += "<p style='margin: 5px 5px 5px 60px;'>" + items[i-j] + "-------------------" + jx + "</p>";
	        };
	        if (cf == '否') {
	            items.splice(i-r,r);
	        }
	    }
	}